Ross pretty well covered it. i would add a couple things.
First, if it's only one ore two in the area. it's a travel spot. If you move up the mountain after the rut you may find bedding/ recovery area. possibly good after rut during rifle.
If you find an area that is tore to crap and has what appears to be several years worth of rubs, this is his living area.
An old bull will return to this area with a few cows. usually higher then the rubs.
If there are scrapes with the rubs this is part of a loop. just like whitetail. bigger scale of loop.
If there are a series of rubs and running up the mountain, then hunt other side of mountain. If rubs are running across the mountain then hunt adjoining drainages.
Closer you get to end of rut more likely to find bulls returning to/through these areas.
Find cows in august. plot thier locations with locations of rubs and you will get a good idea of how elk are traveling in and through an area.
Keep in mind not are bulls are created equal. Different age class bulls travel different distances. from birth to 4 or 5 a bull will stick sort of close to cows all year. From 6-9 they will start hanging further back. Once they hit 10 and beyond they will start traveling less and less distance from winter range.
There is pages and pages that could be written on their travel stuff.
A 12 year old bull often times will not leave winter range. If he does its a 5-12 mile travel circle just to keep predators at bay. He will often be found with 3 or 4 cows traveling with him. those cows will stick with him all year minus calving stuff. A bull that old is perfectly content not fighting and just waiting for those few cows to come in.
If cows are traveling 30 or 40 miles to summer range from winter range a 6-10 year bull will probably travel half that distance at a much slower pace until July. Then start cutting distance in August.
Younger bulls can be found in bachelor groups either real close to cow areas or with older bulls. These are the bulls you will see chasing cows very early in the rut. They will move to cows quicker then older bulls. These are the bulls that would go from rag horn to 340 ish antler size. Not trying to equate antler size to age class just visual reference.
Of course there are exceptions this is not hard and fast. General rule of thumb to determine what age class of bull you are after at what time of year.
Every area of country is slightly different.
Some old bulls stick close to dreading ground. Lot of times breading ground and calving ground are same area.
So if you know where winter range is. Then find calving ground in june. Then find cows in middle august. You know the travel route of herd. Then rub stuff can help determine bull patterns.
rubs by themselves are useless. Put it all together and you can paint a pretty good picture of what, when and where they like to meander.